Alright, let's work through 8644 times 1504 step by step
8644 × 1504 = 1504 × (8644)
+ 1504 × 4 that equals 6016
+ 1504 × 40 that equals 60160
+ 1504 × 600 yielding 902400
+ 1504 × 8000 that results in 12032000

= 13000576
